知搜-全球专利检索

  1. 登录
  2. 注册
发明授权
CN107957400B 一种水性乳液胶黏剂游离甲醛破乳检测试剂及使用该试剂的游离甲醛检测方法 有权

一种水性乳液胶黏剂游离甲醛破乳检测试剂及使用该试剂的游离甲醛检测方法
摘要：
本发明公开了一种水性乳液胶黏剂游离甲醛破乳检测试剂及使用该试剂的游离甲醛检测方法，其技术方案要点是：所述试剂由20％～40％的甲醇、乙醇、乙醚有机溶液中的一种或多种与1‑5g氯化钠混合制成；一种水性乳液胶黏剂游离甲醛的检测方法包括如下步骤：A、称取水性乳液胶粘剂试样，置于离心管中，加入破乳检测试剂，混匀；B、静置，离心,转移上清液于比色管中，用适量的20％～40％的乙醇溶液润洗离心管，用稀盐酸溶液或稀氢氧化钠溶液调节pH至6.0±0.2之间，加乙醇溶液至刻度；C、加入乙酰丙酮溶液摇匀；D、将其置于50～60℃水浴中20～50min，取出冷却至室温；E、然后在410～415nm处测其吸光度，通过标准曲线对比获得甲醛浓度。
摘要（英）：

The invention discloses a waterborne emulsion adhesive free formaldehyde demulsification detection reagent and a free formaldehyde detection method using the same. The reagent is formed by mixing oneor multiple of methanol, alcohol and ethyl ether organic solution of 20-40% and 1-5g of sodium chloride. The detection method includes following steps: A, weighing a waterborne emulsion adhesive sample, putting the same in a centrifugal tube, adding the demulsification detection reagent, and well mixing; B, standing, centrifuging, transferring supernate into a colorimetric tube, using a proper amount of alcohol solution of 20-40% to rinse the centrifugal tube, using diluted hydrochloric acid solution or diluted sodium hydroxide solution to adjust pH to 6.0+/-0.2, and adding alcohol solution toa scale; C, adding acetylacetone solution, and shaking well; D, putting into water bath of 50-60 DEG C for 20-50min, taking out, and cooling to room temperature; E, measuring light absorbance at 410-415nm, and acquiring formaldehyde concentration through standard curve comparison.

公开/授权文献
0/0